(CNN) - The Democratic incumbent in what's turning into a crucial Senate race that could decide which party controls the chamber the next two years goes up Monday with the second television commercial of her re-election bid.

The ad, by Sen. Jeanne Shaheen of New Hampshire, airs a month after her leading Republican challenger, former GOP Sen. Scott Brown, went up with his first paid spot.

(CNN) - In what's turning into a crucial Senate race that could decide which party controls the chamber the next two years, Sen. Jeanne Shaheen of New Hampshire went up Sunday with the first television commercial of her re-election bid.

The ad airs three weeks after her leading Republican challenger, former GOP Sen. Scott Brown, went up with his first paid spot.FULL POST

(CNN) - Former Sen. Scott Brown of Massachusetts will go up Monday with his first television commercial in his Republican bid for the Senate in neighboring New Hampshire.

The launch of the ad, coming just four days after Brown formally kicked off his campaign, is another sign that if he wins his party's nomination, his GOP challenge against incumbent Democratic Sen. Jeanne Shaheen could turn the contest in the Granite State into one of the most high profile and expensive Senate races in the country.FULL POST

(CNN) - Former Sen. Scott Brown of Massachusetts will tout his Granite State roots Thursday as he formally launches a Republican bid for the Senate in neighboring New Hampshire.

And the Republican will criticize the federal health care law and criticize Jeanne Shaheen, the incumbent Democratic senator he hopes to oust in November, saying "I am running to hold Senator Shaheen accountable."

The former senator from Massachusetts, who's been moving closer and closer to running for the Senate in neighboring New Hampshire, formally tosses his hat into the ring at a campaign event in Portsmouth, New Hampshire on Thursday, CNN confirmed Monday morning.

Washington (CNN) - Vice President Joe Biden reflected on his career in politics and what he sees as the fight against cynicism as the keynote speaker at an award ceremony for political reporting in Washington Monday.

The Toner Prize celebration dinner is held in honor of the late Robin Toner, the first woman to be named national political correspondent for The New York Times, who died in 2008.

"When talking to Robin, I always knew it wasn't a cynical exercise for her. It wasn't score-keeping. She knew the outcome of the election affected real people's lives and that's why she held us accountable," Biden said of Toner, who covered five presidential elections and many other federal races during her reporting career.FULL POST

(CNN) - The New Hampshire Republican Party is going up with a new web video that links Democratic Sen. Jeanne Shaheen to President Barack Obama and to the federal health care law.

The Monday release of the video comes on the same day that Shaheen's campaign went up with a radio ad critical of former Sen. Scott Brown of neighboring Massachusetts, who's now taken a key step towards challenging Shaheen.

(CNN) - A war of words is erupting in New Hampshire over a pledge from Massachusetts.

The Democratic Senatorial Campaign Committee Monday criticized former Sen. Scott Brown of Massachusetts, who's now taking steps to launch a Republican challenge against Democratic Sen. Jeanne Shaheen of neighboring New Hampshire, for not signing a pledge to keep outside money out of the race.

Washington (CNN) - They are two of the hottest battlegrounds in the 2014 fight for control of the U.S. Senate.

And Wednesday a leading pro-Democratic group said it's going up with TV commercials in North Carolina and Arkansas that target Republicans challenging incumbent Democratic Sens. Kay Hagan and Mark Pryor, who face tough re-elections this year.

(CNN) – Former Sen. Scott Brown of Massachusetts hasn't launched another bid for the Senate, but he's already being targeted in negative television ads.

The Senate Majority PAC, a group that works to keep the upper chamber in Democratic hands, launched a new spot Wednesday that blasts Brown as he considers a Senate bit from the neighboring state of New Hampshire.FULL POST